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ENHANCED OVERFLOW RESPONSE—sent by the NCS to the
originating switch to indicate a successful translation of the VNET
enhanced overflow request. The information returned is used to route the
call to the correct DMS-250 switch and trunk.
Remote access
VNET subscribers originating on ETSI PRI trunks can access a specific
VNET directory with a unique remote access number. Address and
supplementary codes may be collected and translated at the DAP before
final call routing and termination. Reset and reorigination are also available
with remote access as follows:
reset—enabled during the address state collection of the DTMF digits.
Subscribers may press the "#" key to indicate a reset.
reorigination—can occur with DTMF receivers; enabled after DTMF
digit collection during ringing, during treatment, and after called party
disconnect
After receiving a remote access response or enhanced remote access
response, the DMS-250 provides a prompt tone to the subscriber in order to
collect digits. The answer supervision enhancement establishes the voice
path for DTMF digit collection. The prompt tones required for address and
suppcode collection are configurable on each switch.
Supplementary/account codes
The PBX does not cut voice path until after it receives an alerting or
progress message. Suppcode collection is only possible after voice path is
cut.
The following types of suppcode collection is supported:
DAP-based
data calls
in-switch account code collection
The DMS-250 can collect in-switch account codes and DAP-based
suppcodes using configurable prompt tones and answer supervision
enhancements. Prompt tones can be configured for each office in table
OFCVAR with field RSLR_SUPPCODE_TONE.
Reset
Reset is allowed during suppcode collection for remote access.
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
ETSI PRI 13-17
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